Riesel primes of the form 37•2n-1

Reserved! This sequence is currently part of Multi Reservation 4: NPLB K300 Drive 2.

Current data

k , b : 37 , 2 Type : Low Count : 10 Nash : 630 Max n : 3,100,000 Date : 2025-03-12 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

1, 2553, 4893, 7897, 14353, 32125, 51477, 78973, 341365, 6660841

Remarks :

The sequence A050544 in OEIS For additional n ≡ 1 mod 10 history, see Conjectures 'R Us search at Riesel 74•1024n-1.

History

• 2025-03-12: Reserved by NPLB K300 Drive 2 from n = 3100000
• 2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
• 2020-11-12: Checked n = 3000000 - 3100000 only n !≡ 1 mod 10, RPS Megabit Drive 1
• 2018-04-11: Checked n = 2500000 - 3000000 only n !≡ 1 mod 10, RPS Megabit Drive 1
• 2014-08-12: Reserved by RPS Megabit Drive 1 from n = 2500000 only n !≡ 1 mod 10
• 2014-07-30: Checked n = 2350000 - 6700000 only n ≡ 1 mod 10, Mark Rodenkirch, Serge Batalov, Conjectures 'R Us, released
• 2014-07-30: Found n = 6660841, Serge Batalov, Conjectures 'R Us
• 2014-04-08: none, Predrag Minovic, released
• 2013-12-08: Checked n = 2350000 - 2500000, Predrag Minovic
• 2013-07-09: Checked n = 2290000 - 2350000, Predrag Minovic
• 2012-07-02: Checked n = 2150000 - 2290000, Predrag Minovic
• 2012-05-04: Checked n = 2000000 - 2150000, Predrag Minovic
• 2011-06-04: Checked n = 1950000 - 2000000, Predrag Minovic
• 2011-04-12: Checked n = 1870000 - 1950000, Predrag Minovic
• 2011-03-05: Checked n = 1760000 - 1870000, Predrag Minovic
• 2011-01-13: Checked n = 1710000 - 1760000, Predrag Minovic
• 2010-10-31: Checked n = 1510000 - 1710000, Predrag Minovic
• 2010-09-05: Checked n = 1450000 - 1510000, Predrag Minovic
• 2010-07-18: Reserved by Predrag Minovic for n = 1450000 - 1500000
• 2009-07-26: Checked to n = 1450000, (unknown), See limit at RPS other completed ranges.
• 2009-01-09: Checked n = 950000 - 1008644, 1140001 - 1154265, 1430113 - 1434513, 1652101 - 1709869, 1967593 - 1988085, Peter Benson
• 2008-12-15: Checked n = 1000000 - 1011000, Alexander Jones
• 2008-11-21: Reserved by Alexander Jones
• 2008-07-07: Checked n = 965000 - 1000000, Gary Barnes, released
• 2008-05-25: Checked n = 705000 - 965000, Gary Barnes
• 2008-02-01: Checked n = 600000 - 705000, Gary Barnes
• 2008-01-10: Checked n = 550000 - 600000, Gary Barnes
• 2007-12-29: Reserved by Gary Barnes to n = 800000
• 2007-04-07: Checked n = 500000 - 550000, Jeffrey Sax
• 2004-09-12: Found n = 341365, Jeffrey Sax
• 2004-07-26: Checked n = 200000 - 210000, Steven Harvey, released
• 2004-04-15: Checked n = 1 - 200000, Thomas Masser
• 2004-04-13: Reserved by Thomas Masser
• 1999-12-29: Found n = 51477, David Broadhurst
• 1998-07-28: Found n = 32125, Richard Jones
• 1994: Found n = 7897, Harvey Dubner